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1. 发明专利

JP2000179459A SCROLL COMPRESSOR 失效
公开(公告)号：JP2000179459A
公开(公告)日：2000-06-27
申请号：JP35728698
申请日：1998-12-16
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： TOJO KENJI , TOMITA YOSHIKATSU , MIZUNO TAKAO , HAGITA NAOMI
IPC分类号： F04B39/00 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To average the load generated in a contact part between a roller and a track surface and to improve the bearing force of a roller bearing by providing the roller bearing treated by crowning in such a state as gradually reducing the axial curvature from the axial center of the cylinder roller toward the end in an engagement part between a drive shaft driving a compressor and a stationary member. SOLUTION: In driving a refrigerant compressor using HFC based refrigerant and at the same time using ester-based synthetic oil having compatibility with the HFC based refrigerant or ether-based synthetic oil for lubricant oil, the lubricant oil 14 in a sealed container 1 is sent to main bearings 9a, 9b and a rotational bearing 10 via a feed oil passage in the central part of the drive shaft 5. It is also fed for the lubrication of an autorotation prevention member 11 and a sliding part of a scroll member. In this case, the axial curvature of the roller of the main bearing 9a composed of a cylinder roller bearing is treated by crowning as gradually reducing exponential-functionally from the center toward the longitudinal outside according to the length from the axial center. This constitution can eliminate the stress concentration in the axial end of the roller and improve the bearing force of the roller bearing.

2. 发明专利

JP2001295324A DISTILLING PLANT 失效
公开(公告)号：JP2001295324A
公开(公告)日：2001-10-26
申请号：JP2000114188
申请日：2000-04-14
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： YAMADA SHINICHIRO , ISHIZU KAZUMI , TOJO KENJI , KOBAYASHI ATSUYASU
IPC分类号： E03B3/28 , B01D5/00 , C02F1/02 , C02F1/32 , C02F1/50
摘要： PROBLEM TO BE SOLVED: To implement a distilling plant which achieves high distilling efficiency in a desert zone. SOLUTION: The distilling plant 25 is constituted of a condenser 2, an evaporator 3, a blower 5, and a drain pan 7, and it is set in a storage house 30. Outside air enters the storage house 30 from an air intake port 36, and flows from an air suction port 6 into the distilling plant 25 to be cooled in the evaporator 3. Thus, moisture in air is condensed, deposited on the evaporator 3, and then dropped on the drain pan 7. Therefore, by collecting the dropped moisture, water can be obtained. The condenser 2 is set on a downstream side of the evaporator along the flow of outside air. As a result, the condenser 2 is cooled by air cooled by the evaporator 3, and therefore refrigerant gas in the condenser 2 can be sufficiently cooled, to thereby enhance the distilling efficiency in the evaporator 3.

3. 发明专利

JP2003239874A SCROLL COMPRESSOR 失效
公开(公告)号：JP2003239874A
公开(公告)日：2003-08-27
申请号：JP2001169049
申请日：2001-06-05
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： UEDA HIDEYUKI , TANAKA KEIJI , MIYAKE SHIGEJI , IMAMURA HIROYUKI , YANASE YUICHI , IIZUKA YASUNARI , TOJO KENJI
IPC分类号： F04C29/00 , F04C18/02 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To improve reliability of a scroll compressor using coolant containing no chlorine such as HFC as working fluid by supplying lubricating oil to a sliding surface of a key and a key groove provided on a self rotation preventing member and a fixed member, and preventing contact of the key and the key groove. SOLUTION: In the scroll compressor using coolant containing no chlorine such as HFC, both end parts of the surface of the key of the self rotation preventing member sliding on the key groove of the fixed member is formed with a curved line of a fixed curvature radius of 10 μm or more. COPYRIGHT: (C)2003,JPO

4. 发明专利

JPH11311423A CEILING BURIED TYPE AIR CONDITIONER 失效
公开(公告)号：JPH11311423A
公开(公告)日：1999-11-09
申请号：JP11820098
申请日：1998-04-28
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： FUKAZAWA TOSHINORI , SANO TAKASHI , TOJO KENJI
IPC分类号： F24F13/20 , F24F1/00
摘要： PROBLEM TO BE SOLVED: To obtain a ceiling buried type air conditioner, smooth in the elevating operation of a suction grille, simple in structure, small in the number of parts and suitable for atmosphere. SOLUTION: A ceiling buried type air conditioner is provided with a unit main body 2, equipped with a fan 5 and buried into a ceiling or hung from the ceiling, and a decorative panel 7, equipped with a suction grille 10 at the lower part of the same. In such an air conditioner, a plurality of rotary drums 12, 25, which are driven into normal and reverse rotating directions, a plurality of motors 21, 24, driving the rotary drums, guide rollers 20, provided on the suction grille 10, and wires 13, whose one end is wound and fixed to one of the rotary drums 12, 25 and whose the other end is wound and fixed to the other of the rotary drums 12, 25 through guide rollers 20, are provided.

5. 发明专利

JP2007270697A Scroll fluid machine 审中-公开
标题翻译：滚动流体机
公开(公告)号：JP2007270697A
公开(公告)日：2007-10-18
申请号：JP2006096359
申请日：2006-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUJIMURA KAZUYUKI , TSUCHIYA TAKESHI , YANASE YUICHI , AOKI MAKOTO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI , NAKAMURA SATOSHI , OTAWARA MASARU , HASEGAWA SHUJI , IMAMURA HIROYUKI , YOSUKE YOSHINOBU , TOJO KENJI
IPC分类号： F04C18/02
CPC分类号： F04C27/005 , F04C18/0215 , F04C23/008
摘要： PROBLEM TO BE SOLVED: To enhance compression efficiency and reliability by reducing the flow resistance of a fluid flowing in and out between a back pressure chamber and a compression chamber.
SOLUTION: This scroll fluid machine comprises the compression chamber 14 formed by rotating a rotary scroll 3 relative to a fixed scroll 2 and the back pressure chamber 12 formed in the rotary scroll on the opposite side of a lap 3a. The scroll fluid machine further comprises a communication passage 22 formed in the end plate of the rotary scroll 3 and allowing a compression chamber side opening 22c opening to the compression chamber 14 side to communicate with a back pressure chamber side opening 22b opening to the back pressure chamber 12. When the rotary scroll 3 is rotated, the compression chamber side opening 22c is opened and closed by the end plate of the fixed scroll, and the communication passage 22 is connected and disconnected.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过降低在背压室和压缩室之间流入和流出的流体的流动阻力来提高压缩效率和可靠性。解决方案：该涡旋流体机械包括通过使旋转涡旋件3相对于固定涡旋件2旋转而形成的压缩室14和形成在回转涡卷上的背压室12，该背压室12在搭接部3a的相对侧。涡旋流体机械还包括形成在旋转涡旋件3的端板中的连通通道22，并且允许通向压缩室14侧的压缩室侧开口22c与背压侧开口22b连通当旋转涡旋件3旋转时，压缩室侧开口22c被固定涡旋盘的端板打开和关闭，并且连通通道22被连接和断开。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2007146864A Scroll compressor 审中-公开
标题翻译：滚动压缩机
公开(公告)号：JP2007146864A
公开(公告)日：2007-06-14
申请号：JP2007070879
申请日：2007-03-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUNAGA MUTSUNORI , MIZUNO TAKAO , TOJO KENJI , UEDA HIDEYUKI , HIDA TAKESHI
IPC分类号： F04C18/02 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To feed sufficient and required amount of lubricating oil to each sliding part and prevent overheating of a sliding face due to insufficient amount of fed oil and reduction of performance of a compressor due to excessive amount of fed oil.
SOLUTION: This scroll compressor is provided with a sealing member 4 provided between a turn scroll and a main frame and partitioning a back pressure chamber 9 from each bearing part 30, 31 to bring pressure in each bearing part to substantially delivery pressure, first oil feeding passages 21, 22 passing through a crank shaft 6 from a lubricating oil part 13 whose pressure is below the delivery pressure and communicating with a space 2h in an end part of a crank part, a second oil feeding passage 2f passing through an end plate 2a of the turn scroll from the space in the end part of the crank shaft, opened in the sliding parts of end plates of the turn and fixed scrolls, and communicating with a back pressure chamber behind them, and a third oil feeding passage 22b opened on an outer peripheral face of the crank shaft from halfway sections of the first oil feeding passages and feeding lubricating oil to a main bearing part 31 by utilizing action of a centrifugal pump due to rotation of the crank shaft. This scroll compressor has an oil feeding structure having a restriction part for restricting the area of the passages in a halfway section of the second oil feeding passage 2f.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为每个滑动部分供应足够和所需量的润滑油，并防止由于供油不足导致的滑动面过热，并且由于过量的供油导致压缩机性能下降。解决方案：该涡旋式压缩机设置有设置在转动涡旋件和主机架之间的密封部件4，并且从每个轴承部件30,31分离背压室9，以使每个轴承部件的压力基本上达到输送压力，第一供油通道21,22从压力低于输送压力的润滑油部分13通过曲轴6并与曲柄部分的端部中的空间2h连通，第二供油通道21f穿过转向盘的端板2a从曲轴端部的空间开口，在转弯端板和固定涡卷的端板的滑动部分中开口，并与后面的背压室连通，第三供油通道 22b在第一供油通道的中间部分在曲轴的外周面上开口，并且通过利用离心泵由于旋转的作用将润滑油供给到主轴承部31 n的曲轴。该涡旋压缩机具有供油结构，该供油结构具有用于限制第二供油通道2f的中途的通道的面积的限制部。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006342755A SCROLL COMPRESSOR AND REFRIGERATING APPARATUS 审中-公开
公开(公告)号：JP2006342755A
公开(公告)日：2006-12-21
申请号：JP2005170278
申请日：2005-06-10
申请人： HITACHI LTD
发明人： NAKAMURA SATOSHI , MATSUNAGA MUTSUNORI , HASEGAWA SHUJI , TOJO KENJI
IPC分类号： F04C18/02 , F04C29/04 , F25B1/00 , F25B1/04
摘要： PROBLEM TO BE SOLVED: To make it possible to decrease pressing force which presses one scroll against the other scroll in a scroll compressor and to reduce wear or seizure occurring at the tooth top of the scroll, thereby enlarging the operating range of the compressor. SOLUTION: In the scroll compressor, a scroll back-pressure chamber is composed of a space 111 filled with suction gas (or intermediate-pressure gas) and a space 112 filled with discharge-pressure gas, and one scroll is pressed against the other scroll by the total pressure of the suction gas pressure (or the intermediate pressure) and the discharge gas pressure. An injection hole 205 for injecting gas refrigerant or liquid refrigerant into a compression chamber 81 of a scroll compression mechanism section 2 is provided in a fixed scroll 6, and gas injection or liquid injection is selected and carried out according to an operating pressure ratio. COPYRIGHT: (C)2007,JPO&INPIT

8. 发明专利

JP2006138327A Refrigerant compressor 审中-公开
标题翻译：制冷压缩机
公开(公告)号：JP2006138327A
公开(公告)日：2006-06-01
申请号：JP2006019984
申请日：2006-01-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOJO KENJI , HAYASE ISAO , TAKAO KUNIHIKO
IPC分类号： F04B49/06
摘要： PROBLEM TO BE SOLVED: To provide a highly efficient compressor whose discharge amount is changeable over a very wide range depending on load and whose performance less deteriorates.
SOLUTION: A compression mechanism part has a piston 10 and a cylinder 31. It also has a variable capacity mechanism for adjusting the discharge amount (changing the stroke of the piston, e.g. ) using a mechanical structure. A motor part for driving the compression mechanism part is constructed so that its rotating speed is controlled via a frequency converting device such as an inverter or a pole number converter. The discharge amount of the compressor is adjusted by controlling both the variable capacity mechanism and the frequency converting device.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种高效率的压缩机，其排出量根据负载在非常宽的范围内变化，并且其性能较差劣化。压缩机构部件具有活塞10和气缸31.它还具有用于调节排放量（例如使用机械结构改变活塞行程）的可变容量机构。用于驱动压缩机构部件的电动机部件被构造成通过诸如逆变器或极数转换器之类的变频装置来控制其转速。通过控制可变容量机构和变频装置来调整压缩机的排出量。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2004325019A Freezing device comprising expander 有权
标题翻译：包装机的冷冻装置
公开(公告)号：JP2004325019A
公开(公告)日：2004-11-18
申请号：JP2003123125
申请日：2003-04-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOSOKABE HIROKATSU , HIGA KAZUTO , ENDO KAZUHIRO , TOJO KENJI
IPC分类号： F25B1/00 , F25B1/04 , F25B1/10 , F25B9/00 , F25B9/06 , F25B11/02
CPC分类号： F25B9/008 , F25B1/04 , F25B1/10 , F25B9/06 , F25B2309/061 , F25B2400/0411
摘要： PROBLEM TO BE SOLVED: To improve performance and reliability by securing the lubrication of sliding parts in a positive-displacement expander and compressors.
SOLUTION: The positive-displacement expander 2 for converting the expansion energy of working fluid into mechanical energy, and a sub-compressor 3 driven by the expander are integrated, and accommodated in a sealed container 5 for an expansion/compression system, in which a lubricant 20 is stored. Further the main compressor 27 of a refrigerating system 24 is accommodated in a sealed container for the main compressor, in which the lubricant 20 is stored. These sealed container 5, 27a are connected by a pipe, and the rise of an oil surface in each sealed container is controlled by the flow of the working fluid, so that the deviation of the lubricant between the sealed containers is automatically adjusted, and a lubricating state of the fluid machinery can be kept in a good condition.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过确保滑动部件在正排量膨胀机和压缩机中的润滑来提高性能和可靠性。解决方案：将用于将工作流体的膨胀能转换成机械能的正排量膨胀器2和由膨胀机驱动的副压缩机3一体化，并被容纳在用于膨胀/压缩系统的密封容器5中，其中存储有润滑剂20。此外，制冷系统24的主压缩机27容纳在用于主压缩机的密封容器中，其中储存有润滑剂20。这些密封容器5,27a通过管连接，并且通过工作流体的流动来控制每个密封容器中的油面的上升，从而自动调节密封容器之间的润滑剂的偏差，并且流体机械的润滑状态可以保持在良好的状态。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2003307187A Scroll compressor 有权
标题翻译：滚动压缩机
公开(公告)号：JP2003307187A
公开(公告)日：2003-10-31
申请号：JP2003151756
申请日：2003-05-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAO KUNIHIKO , TAKEBAYASHI MASAHIRO , ENDO KIJU , YOSHITOMI YUJI , MACHIDA SHIGERU , TOJO KENJI , SEKIGAMI KAZUO
IPC分类号： F04C23/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a scroll compressor of small size assuring a good performance and good reliability.
SOLUTION: The scroll compressor includes a revolving scroll 6 which is put in an eccentric circle motion with respect to stationary scrolls 4 and 5 while the rotation round its own axis is hindered whereby a gas is compressed, wherein the revolving scroll 6 is furnished with a groove 6e at the peripheral surface of a flat plate so as to accommodate an Oldham joint 15 to engage with the revolving scroll and admit an eccentric circle motion of the revolving scroll while its rotation round the own axis is hindered.
COPYRIGHT: (C)2004,JPO

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